Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-579 A Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-01-23   
661-579 0 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2010-08-30   
661-579 1 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2010-03-06   
661-579 2 Lancaster CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2008-10-16   
661-579 3 Lancaster CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-07-02   
661-579 4 Lancaster CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-07-02   
661-579 5 Lancaster CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730   2011-05-08   
661-579 6 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-02-04   
661-579 7 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-08-01   
661-579 8 Lancaster CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2008-09-04   
661-579 9 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-03-22   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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